Thank you Rossi,
Now the main problem is to display a hyper link only when i throw the error is it possible is there anyway to enhance the layout of login.htm i don't have any idea on bsp, is it possible that i can call a new pop-up after throwing error the popup contains hyper link.so do i need to create separate bsp(Z app ) application for pop-up window and call it from my code after error ? please reply if you know